Grease On Front And Rear Wheel Bearings - Subaru XT 1988 Service Manual

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PERIODIC MAINTENANCE SERVICES
Grease on Front and
Rear Wheel Bearings
INSPECTION
Inspect the condition of front and rear wheel bearing grease as
follows:
FRONT WHEEL BEARING (Except XT6)
1) Raise front wheel with a jack, and remove wheel. Remove
cotter pin from axle shaft and remove castle nut.
2)
Remove hub & disc ASSY.
3) Remove oil seal from housing, and check the condition of
bearing grease.
a. If either the grease appears to be white or if only a small
amount of grease remains, remove the bearing from the
housing, clean it, and pack it with grease.
b. Discard the old seal and install a new one.
Fig. 77
4) Installation is in the reverse order of removal.
Tightening torque (Castle nut):
196 N·m (20 kg-m, 145 ft-Ib)
L 1-177
After tightening the castle nut to the specified torque, tighten
additionally in one sixth (1/6) turn until both holes of bolt
and castle nut align each other.
Tightening torque (Hub to disc rotor bolts):
44 - 58 N·m (4.5 - 5.9 kg-m, 33 - 43 ft-Ib)
38
MAINTENANCE INTERVAL
[Number of months or km (miles!. whichever occurs first]
Months 7.5 15 22.5 30 37.5 45 52.5 60
x 1,000 km 12 24 36 48 60 72
84
96
x 1,000 miles
7.5
15 22.5 30 37.5 45
52.5
60
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FRONT WHEEL BEARING (XT6)
1) Jack up the front of vehicle.
2) While holding front wheel by hand, swing it in and out to
check bearing free play.
3) Loosen wheel nuts and remove front wheel.
4) If bearing free play exists in step 2) above, attach a dial
gauge to hub and measure axial displacement in axial direc-
tion.
Service limit:
Straight-ahead position within 0.05 mm (0.0020 in)
5) Remove bolts and self-locking nuts, and extract transverse
link from front crossmember.
6) While lightly hammering spring pin which secures D.O.J.
to transmission spindle, remove it.
7) Extract D.O.J. from transmission spindle.
8) While supporting front drive shaft horizontally with one
hand, turn hub with the other to check for noise or binding.
If hub is noisy or binds, disassemble front axle and check
condition of oil seals, bearings, etc.
REAR WHEEL BEARING
[Except 4WD vehicle)
1) Apply parking brake, and loosen rear wheel nuts.
2) Jack up vehicle, support it with safety stands (rigid racks)
and remove rear tires and wheels.
3) Pry brake drum cap by screwdriver off drum.
4) Flatten lock washer and loosen axle nut, then remove lock
washer, lock plate and brake drum so as not to drop inner race
of outer taper roller bearing.
Outer bearing, outer race of inner bearing and oil seal can be
removed together with drum.
5) Check condition of bearing grease.
a. If either the grease appears to be white or if only a small
amount of grease remains, remove the bearing hom the
housing, clean it, and pack it with grease.
b. Discard the old seal and install a new one.
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